Reference frame and effects of orientation on finding the tops of rotated objects.

Investigated effects of stimulus orientation across trial blocks and the spatial reference frame with a task in which Ss, with their heads upright or tilted, judged a dot to be near the top or the bottom of rotated line drawings of objects. Objects used in this task were also named. Response times from the 1st block of trials increased linearly for objects rotated from 0 to 120° from the upright. Across blocks, orientation effects diminished for naming but remained the same for top–bottom discriminations. Practice with top–bottom discriminations diminished orientation effects when the same objects were subsequently named. The spatial reference frame for top–bottom discrimination was midway between retinal and environmental coordinates. Specifying the location of object features is of greater importance for top–bottom discriminations than for naming and underlies orientation effects in these tasks. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reading rotated words.

In 4 experiments, 72 Hebrew-speaking university students performed lexical decisions on Hebrew letter strings that appeared at different orientations. Response times evidenced a strong interaction between string length and orientation. At angular deviations of less than 60° from the upright, neither orientation nor string length had any effect, suggesting that words were directly, and probably holistically, recognized. The results for the 60° deviation, while also exhibiting no effects of word length, yielded slower response times, suggesting a holistic rectification process. For deviations between 60° and 120°, the effects of disorientation increased sharply with increasing string length, suggesting piecemeal processing than may be due to the utilization of reading units smaller than the whole word or to piecemeal rectification. In this region, stimulus disorientation appears to impair word recognition by disrupting transgraphemic information rather than by interfering with letter identification. Extreme disorientations, 120° or more, exhibited no further impairment with increased disorientation, and all evidenced strong and similar length effects, suggesting letter-by-letter reading. Implications for the reading of normal and transformed text are discussed. (45 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Visual priming of inverted and rotated objects.

[Correction Notice: An erratum for this article was reported in Vol 36(4) of Journal of Experimental Psychology: Learning, Memory, and Cognition (see record 2010-12650-021). In the article, there was an error in the sixth sentence of the abstract. The sentence should read “Experiments 2 and 3 demonstrated that although identification was sensitive to orientation, visual priming was relatively invariant with image inversion (i.e., an image visually primed its inverted counterpart approximately as much as it primed itself).”] Object images are identified more efficiently after prior exposure. Here, the authors investigated shape representations supporting object priming. The dependent measure in all experiments was the minimum exposure duration required to correctly identify an object image in a rapid serial visual presentation stream. Priming was defined as the change in minimum exposure duration for identification as a function of prior exposure to an object. Experiment 1 demonstrated that this dependent measure yielded an estimate of predominantly visual priming (i.e., free of name and concept priming). Experiments 2 and 3 demonstrated that although priming was sensitive to orientation, visual priming was relatively invariant with image inversion (i.e., an image visually primed its inverted counterpart approximately as much as it primed itself). Experiment 4 demonstrated a similar dissociation with images rotated 90° off the upright. In all experiments, the difference in the magnitude of priming for identical or rotated–inverted priming conditions was marginal or nonexistent. These results suggest that visual representations that support priming can be relatively insensitive to picture-plane manipulations, although these manipulations have a substantial effect on object identification. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Naming multisyllabic words.

The process of reading multisyllabic words aloud from print was examined in 4 experiments. Experiment 1 used multisyllabic words that vary in terms of the consistency of component spelling-sound correspondences. The stimuli were regular, regular inconsistent, and exception words analogous to the monosyllabic items used in previous studies. Both regular inconsistent and exception words produced longer naming latencies than regular words. In Experiment 2 these differences between word types were found to be limited to lower frequency items. Experiment 3 showed that effects of number of syllables on naming latency are also limited to lower frequency words. In the final experiment, consistency effects were obtained for both higher and lower frequency words when the stimulus display forced subjects to use syllabic units. Thus, frequency modulates the effects of two aspects of lexical structure—consistency of spelling-sound correspondences and number of syllables. The results suggest that the naming of multisyllabic words draws on some of the same knowledge representations and processes as monosyllabic words; however, naming does not require syllabic decomposition. The results are discussed in the context of current models of naming. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Repetition blindness for rotated objects.

Repetition blindness (RB) is the finding that observers often miss the repetition of an item within a rapid stream of words or objects. Recent studies have shown that RB for objects is largely unaffected by variations in viewpoint between the repeated items. In 5 experiments, we tested RB under different axes of rotation, with different types of stimuli (line drawings and shaded images, intact and split), using both novel and familiar objects. Although RB was largely viewpoint invariant, in most experiments, RB was reduced for small (0°) and large (180°) viewpoint differences relative to intermediate rotations. However, these deviations from invariance were eliminated when object images were split, breaking the holistic coherence of the object. These findings suggest that RB is due mainly to the activation of object representations from local diagnostic features, but can be modulated by priming on the basis of view similarity. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Top-bottom and front-behind decisions on rotated objects.

Examined 2 tasks requiring the perception of the spatial relationship between an object and a dot. 24 undergraduates decided whether a dot was nearer the top or bottom of rotated drawings of objects in a top-bottom task, and whether a dot was at the front of or behind rotated objects in a front-behind task. These 2 tasks were performed with the head upright and with the head tilted clockwise and counterclockwise in separate blocks of trials in order to dissociate retinal from environmental perceptual frames of reference. Response times increased approximately linearly with increasing departure from the orientation of the perceptual reference frame in both tasks; the magnitude of the effect was similar across tasks. In the head-tilted conditions, the perceptual frame of reference was located midway between the environmental and retinal upright for both tasks. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Distance-dependent processing of pictures and words.

A series of 8 experiments investigated the association between pictorial and verbal representations and the psychological distance of the referent objects from the observer. The results showed that people better process pictures that represent proximal objects and words that represent distal objects than pictures that represent distal objects and words that represent proximal objects. These results were obtained with various psychological distance dimensions (spatial, temporal, and social), different tasks (classification and categorization), and different measures (speed of processing and selective attention). The authors argue that differences in the processing of pictures and words emanate from the physical similarity of pictures, but not words, to the referents. Consequently, perceptual analysis is commonly applied to pictures but not to words. Pictures thus impart a sense of closeness to the referent objects and are preferably used to represent such objects, whereas words do not convey proximity and are preferably used to represent distal objects in space, time, and social perspective. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Processing time and memory for pictures.

Postexposure processing of an iconic memory following the presentation of pictures of complex, colored, naturalistic scenes was assessed in 3 experiments which examined the effects of exposure duration and mask delay upon recognition memory. Ss were 50 undergraduates. Exposure durations ranged from 50 to 550 msec and mask delays from 0 to 500 msec. For exposure durations of 300 msec and longer, recognition accuracy was primarily determined by exposure duration, and mask delay had no significant effect. For exposure durations of less than 300 msec, postexposure processing continued for up to 250 msec following the offset of a target picture, and recognition accuracy was a function of total processing time (i.e., the total time separating target and mask onsets.) This reciprocity between exposure duration and mask delay was similar to that previously demonstrated for verbal materials. The processing-time/recognition memory relationship was also shown to be due to differences in initial encoding. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Semantic facilitation with pictures and words.

The present experiments explored the role of processing level and strategic factors in cross-form (word–picture and picture–word) and within-form (picture–picture and word–word) semantic facilitation. Previous studies have produced mixed results. The findings presented in this article indicate that semantic facilitation depends on the task and on the subjects' strategies. When the task required semantic processing of both picture and word targets (e.g., category verification), equivalent facilitation was obtained across all modality combinations. When the task required name processing (e.g., name verification, naming), facilitation was obtained for the picture targets. In contrast, with word targets, facilitation was obtained only when the situation emphasized semantic processing. The results are consistent with models that propose a common semantic representation for both picture and words but that also include assumptions regarding differential order of access to semantic and phonemic features for these stimulus modalities. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Children's inferences with print and pictures.

The primary purpose of this study was to determine whether there is a difference in children's ability to answer inferential questions from pictures, print, and print with pictures. A secondary purpose was to determine whether there is a difference between more skilled and less skilled reader's ability to answer inferential questions in the different modes. The participants in the study were 116 fifth- and sixth-grade students. The materials consisted of 15 photographs and 15 passages of 150 to 200 words. Each student participated in each condition by answering 25 inferential questions. The results indicated that the students performed significantly better in the picture-only and the print-with-picture conditions than in the print-only condition. Although the more skilled readers scored significantly better than the less skilled readers in the print-only condition, there were no differences between the two ability groups in the two picture conditions. Qualitative analyses were also conducted on the students' responses for determining possible sources of errors. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Aging and memory for pictures of faces.

The hypothesis that pictorial aspects of face-recognition memory are lower in old age was tested in 2 studies. Young and elderly Ss viewed 48 face pictures, and then took a test containing identical copies of input faces, pictorially changed versions of input faces, and entirely new faces. Replicating prior findings, Experiment 1 showed that false recognitions of entirely new faces were higher among elderly Ss. However, there were no age differences in distinguishing identical from pictorially changed faces. Using a modified test, Experiment 2 showed that although the elderly Ss had good knowledge that changed faces were changed, they had relatively poor knowledge of how they were changed. There appears to be age differences in analytical matching of pictorial information against information in memory. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Immediate and delayed recall of words and pictures.

Examined free and serial recall of words and pictures associates in 3 experiments with 156 Ss. In immediate free recall, presentation of pictorial material increased only the secondary memory component of recall, relative to conditions involving presentation of verbal materials. No such facilitation occurred in immediate serial recall. In delayed recall tests, negative recency effects were obtained only for verbal materials, in both free and serial recall. Recency effects were either nonnegative or positive with pictures as to-be-remembered material. Results are discussed in terms of the locus of word-picture differences and the adequacy of verbal memory model explanations for them. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Repetition blindness for pseudoobject pictures.

In this study the nature of type activations that underlie repetition blindness (RB) was addressed. According to the token individuation hypothesis put forward to explain RB, both instances of a repeated stimulus make contact with the mental representation, or type, for that stimulus. In the resulting confusion only the first stimulus is encoded as an episodic instance or token. Type representations have traditionally been thought of as preexisting and are often linked within a network of nodes. The authors developed and tested a picture frequency task, which does not require stimulus naming, and used it to examine repetition performance for unfamiliar nonobject pictures. RB was found for these stimuli, despite the fact that they had no prior phonological or semantic representations. These results suggest that the reactivation of a newly formed visual type is sufficient to produce RB. Implications for the role of types in the token individuation hypothesis are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Directed forgetting: Comparing pictures and words.

The authors investigated directed forgetting as a function of the stimulus type (picture, word) presented at study and test. In an item-method directed forgetting task, study items were presented 1 at a time, each followed with equal probability by an instruction to remember or forget. Participants exhibited greater yes–no recognition of remember than forget items for each of the 4 study–test conditions (picture–picture, picture–word, word–word, word–picture). However, this difference was significantly smaller when pictures were studied than when words were studied. This finding demonstrates that the magnitude of the directed forgetting effect can be reduced by high item memorability, such as when the picture superiority effect is operating. This suggests caution in using pictures at study when the goal of an experiment is to examine potential group differences in the magnitude of the directed forgetting effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of structure and strategy in two-dimensional pictures.

The development of 2 structural principles, hierarchical complexity and interruption, was examined in a new domain, 2-dimensional pictures. Using felt pieces, 20 children in each of 3 age groups (4–4.5, 4.5–5, and 5–5.5 yrs) were asked to reproduce felt pictures of flower arrangements constituting tree structures of different levels of hierarchical complexity. For each model, task difficulty was varied by requiring Ss to construct pictures either with whole flowers or with component pieces. The ability to reproduce the models formed a Guttman scale according to tree structure complexity, and older Ss scored higher on the scale than younger Ss. Thus, hierarchical complexity has a developmental role in the pictorial domain, as in language and 3-dimensional construction. The construction process was analyzed in terms of uninterrupted and interrupted strategies. Unlike earlier results with abstract (nonfigural) 3-dimensional construction tasks, the present Ss did not avoid interrupted strategies. The lack of strategy preference with whole flowers and the development of a preference for interrupted strategies with components may stem from the fact that the strong figural and thematic aspects of the models reduced the cognitive complexity of an interrupted strategy. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Agitation of the melt in mold hot tops

Donetsk Polytechnic Institute. Translated from Metallurg, No. 4, pp. 35–36, April, 1990.